/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.skywalking.oap.arthas;

import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.skywalking.apm.network.arthas.Command;

public class CommandQueue {

    private static final Map<String, Command> COMMANDS = new ConcurrentHashMap<>();

    public static void produceCommand(String serviceName, String instanceName, Command command) {
        COMMANDS.put(serviceName + instanceName, command);
    }

    public static Optional<Command> consumeCommand(String serviceName, String instanceName) {
        return Optional.ofNullable(COMMANDS.remove(serviceName + instanceName));
    }
}
